Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations

F. Crouzet; P. Lafon; T. Buchal; D. Laurence

Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations

F. Crouzet
, P. Lafon
, T. Buchal
, D. Laurence

Lamsid/EDF/R and D

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

Résumé

A hybrid computational method for the calculation of flow noise is presented: Large Eddy Simulation (LES) for the flow and Linearized Euler Equations (LEE) for the acoustic propagation. The source term that is introduced in the LEE is the one previously defined in the SNGR (Stochastic Noise Generation and Radiation) model. But instead of calculating this source term by means of a stochastic simulation of the fluctuating turbulent velocity field, it is directly calculated using the unsteady turbulent field given by the LES computations. This approach is applied to the case of a diaphragm in a duct. Two computations for two different upstream mean velocities are carried out. Source terms calculated on the LES grid are projected on the acoustic grid. The results are in good agreement with experimental ones.

langue originale	Anglais
titre	8th AIAA/CEAS Aeroacoustics Conference and Exhibit
état	Publié - 1 déc. 2002
Modification externe	Oui
Evénement	8th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2002 - Breckenridge, CO, États-Unis Durée: 17 juin 2002 → 19 juin 2002

Série de publications

Nom	8th AIAA/CEAS Aeroacoustics Conference and Exhibit

Une conférence

Une conférence	8th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2002
Pays/Territoire	États-Unis
La ville	Breckenridge, CO
période	17/06/02 → 19/06/02

Contient cette citation

@inproceedings{d538a816f3224ec98bfbb7acd25b8b14,

title = "Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations",

abstract = "A hybrid computational method for the calculation of flow noise is presented: Large Eddy Simulation (LES) for the flow and Linearized Euler Equations (LEE) for the acoustic propagation. The source term that is introduced in the LEE is the one previously defined in the SNGR (Stochastic Noise Generation and Radiation) model. But instead of calculating this source term by means of a stochastic simulation of the fluctuating turbulent velocity field, it is directly calculated using the unsteady turbulent field given by the LES computations. This approach is applied to the case of a diaphragm in a duct. Two computations for two different upstream mean velocities are carried out. Source terms calculated on the LES grid are projected on the acoustic grid. The results are in good agreement with experimental ones.",

author = "F. Crouzet and P. Lafon and T. Buchal and D. Laurence",

year = "2002",

month = dec,

day = "1",

language = "English",

isbn = "9781624101199",

series = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit",

booktitle = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit",

note = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2002 ; Conference date: 17-06-2002 Through 19-06-2002",

}

Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations. / Crouzet, F.; Lafon, P.; Buchal, T. et al.
8th AIAA/CEAS Aeroacoustics Conference and Exhibit. 2002. (8th AIAA/CEAS Aeroacoustics Conference and Exhibit).

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

TY - GEN

T1 - Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations

AU - Crouzet, F.

AU - Lafon, P.

AU - Buchal, T.

AU - Laurence, D.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - A hybrid computational method for the calculation of flow noise is presented: Large Eddy Simulation (LES) for the flow and Linearized Euler Equations (LEE) for the acoustic propagation. The source term that is introduced in the LEE is the one previously defined in the SNGR (Stochastic Noise Generation and Radiation) model. But instead of calculating this source term by means of a stochastic simulation of the fluctuating turbulent velocity field, it is directly calculated using the unsteady turbulent field given by the LES computations. This approach is applied to the case of a diaphragm in a duct. Two computations for two different upstream mean velocities are carried out. Source terms calculated on the LES grid are projected on the acoustic grid. The results are in good agreement with experimental ones.

AB - A hybrid computational method for the calculation of flow noise is presented: Large Eddy Simulation (LES) for the flow and Linearized Euler Equations (LEE) for the acoustic propagation. The source term that is introduced in the LEE is the one previously defined in the SNGR (Stochastic Noise Generation and Radiation) model. But instead of calculating this source term by means of a stochastic simulation of the fluctuating turbulent velocity field, it is directly calculated using the unsteady turbulent field given by the LES computations. This approach is applied to the case of a diaphragm in a duct. Two computations for two different upstream mean velocities are carried out. Source terms calculated on the LES grid are projected on the acoustic grid. The results are in good agreement with experimental ones.

M3 - Conference contribution

AN - SCOPUS:84896862943

SN - 9781624101199

T3 - 8th AIAA/CEAS Aeroacoustics Conference and Exhibit

BT - 8th AIAA/CEAS Aeroacoustics Conference and Exhibit

T2 - 8th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2002

Y2 - 17 June 2002 through 19 June 2002

ER -

Aerodynamic noise prediction in internal flows using LES and Linear Euler Equations

Résumé

Série de publications

Une conférence

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